The
GSync II is the 2U compact version of the popular
and versatile GSync, and provides eight output
module slots. The heart of the GSync II is the GTF
(GPS Time and Frequency) module within the unit. It
is self-contained with a Quartz or Rubidium
oscillator, and a commercial C/A GPS receiver or a
military SAASM GPS receiver (Rockwell-Collins MPE-S
GB-GRAM or Trimble Force 22E MRU).

If a system needs a Primary Reference Source (PRS),
the GSync II provides either Standard Positioning
Service (SPS) GPS (the civil C/A signal) or the very
latest in GPS military technology—SAASM Precision
Positioning Service (PPS) GPS receivers
(for approved users only). With GPS as the reference
source, the GSync II provides a frequency accuracy
of 1E-12 and a time accuracy to < 50 ns Peak to UTC,
for calibrated units. The GSync II is also designed
to take external inputs to provide internal
frequency
synchronization to the accuracy of the external
source.

There are two choices of disciplined oscillator
selection. An Ovenized Quartz Crystal Oscillator
(OCXO) or a Rubidium Atomic Oscillator can be
specified. The GSync II can be populated with up to
(8) option modules.

There are a wide variety of output option modules
available: Low-Phase Noise sine wave, T1/E1, Time
Codes, and Network Time Protocol (NTP). The full
line of common GSync II and CommSync II option
modules are shown in the option module listing on
our web site.

For Monitor and Control functions there is an RS-232
communication port on the rear panel of the chassis
and a standard Ethernet port providing Telnet, SNMP,
and Network Time Protocol (NTP), as well as IEEE
PTPv2 IEEE 1588-2008.

(e) U.S. Government
policy restricts the sale of Precise Positioning
Service (PPS) equipment to those
authorized by the U.S. Department of Defense. Non-U.S.
authorized users must purchase PPS equipment
through the Foreign Military Sales (FMS) process.

(f) Dependent on the
accuracy of initialization parameters from PLGR
or DAGR handheld SAASM GB-GRAM receivers, or
other initialization devices.